<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<body>
  
  <form action="/cba">
    <div>
      您的爱好:
      <label for="basketball">
        <input id="basketball" type="checkbox" name="hobby" checked value="basketball">篮球
      </label>
      <label for="football">
        <input id="football" type="checkbox" name="hobby" value="football">足球
      </label>
    </div>
    
    <input type="submit">
  </form>

</body>
</html>